Data With Variability

The data in the graph varies between what two numbers?

• 0 to 8

• 4 to 14

The data in the graph varies between what two numbers?

• 3 to 9

• 2 to 10

Which question would yield data with variability?

• How many visitors to the park are there in a year?

• How many visitors to the park are there in each year?

What is the difference between the highest and lowest temperature?

• 20 - 16 = 4

• 23 - 12 = 11

• 22 - 14 = 8

• 23 - 16 = 7

What is an outlier?

• The most frequent number in a data set

• A value much higher or lower than the other values in a data set

• The middle value of a data set

• The average of all the values in a data set

Which data set shows more variability? Explain your answer.

• Female

• Male

• Not enough information

What conclusion can Ms. Long make about the performance of her first- and second-period classes?

• The first-period class had a higher median score than the second-period class.

• The second-period class scores had a higher mean than the first-period class scores.

• The first-period class scores had a greater range than the second-period class scores.

• The second-period class scores had a greater mean absolute deviation than the first-period class scores.

Which measure of variability should you use?

• IQR

• standard deviation

Which set has greater variability?

• A

• B

Determine the variability of the data.

Mathematical Equivalence

ON